User blog comment:Sefiros2211/Dante's Age/@comment-1164563-20140321163227/@comment-1164563-20140322091344

I am not aware of any official statements of it being non-canon. You are free to correct me of course in case you have a link, but I doubt this situation has been changed. Aside from that, it is written by Morihashi Bingo, the scenario designer for Devil May Cry 3 and Devil May Cry 4, which sorts of makes it at least supplemental canon?

Semi-related, we had a discussion on what's canon and not forever ago. Ironically, the status of DF wasn't really touched, so I got the idea that most people do consider it canon.